NEXO NXAMP 4X1 Owner's Manual - Yamaha Commercial Audio

TABLE OF CONTENTSETTING-UP ADVICE.......................................................................................................................................................19EARTH CONNECTION..............................................................................................................................................................19MAINS SETTING......................................................................................................................................................................19MOUNTING THE NXAMP4X1 IN A RACK (GROUNDING, SHIELDING & SAFETY ISSUES) .....................................................19USING THE NXAMP4X1 WITHOUT A RACK ..........................................................................................................................21FUSES......................................................................................................................................................................................21ELECTROMAGNETIC ENVIRONMENTS ...................................................................................................................................21ANALOGUE INPUT SIGNAL CABLES ........................................................................................................................................21NXAMP4X1 POWER OUTPUTS WIRING.................................................................................................................................23GENERAL DESCRIPTION................................................................................................................................................24GLOBAL ARCHITECTURE .......................................................................................................................................................24POWER SUPPLY BLOCK ...........................................................................................................................................................24ANALOG INPUT BLOCK ............................................................................................................................................................25CONTROL BLOCK.....................................................................................................................................................................25POWER AMPLIFIER BLOCKS......................................................................................................................................................26POWER OUTPUTS BLOCK..........................................................................................................................................................26USER INTERFACE BLOCK..........................................................................................................................................................27COMMUNICATION BLOCK ........................................................................................................................................................27EXPANSION SLOT BLOCK .........................................................................................................................................................29BLOCK DIAGRAM DESCRIPTION ................................................................................................................................30PATCHING AND ROUTING (1) .................................................................................................................................................31DELAY & POLARITY INVERSION (2) ......................................................................................................................................31FACTORY SET-UP DELAY .........................................................................................................................................................31USER SET-UP DELAY................................................................................................................................................................31EQUALISATION & FILTERING................................................................................................................................................31SUBSONIC AND VHF FILTERING (3).........................................................................................................................................31EQUALISING WIDEBAND ACOUSTICAL RESPONSE (3) ...............................................................................................................32USER SET-UP, ARRAY EQ (4) ....................................................................................................................................................32EQUALISING SINGLE COMPONENT RESPONSE AND NXSTREAM PROCESSING (5) ...................................................................32CROSSOVER SECTION (6) .........................................................................................................................................................32POST PROTECTION EQ AND LOW PASS (27) (28) ......................................................................................................................32GAIN SECTION (29)..................................................................................................................................................................32PROTECTIONS ........................................................................................................................................................................33SOURCE SIGNALS FOR PROTECTION ALGORITHMS (25) ............................................................................................................33DISPLACEMENT CONTROL (7) (8) (9) .......................................................................................................................................33MECHANICAL STRESS CONTROL (10) (11) ...............................................................................................................................33HF DISPLACEMENT CONTROL (12)...........................................................................................................................................34HF ACCELERATION CONTROL (13)...........................................................................................................................................34GLOBAL PURPOSE VCEQ (14).................................................................................................................................................34LOUDSPEAKER PEAK LIMITERS(15) .........................................................................................................................................34TEMPERATURE CONTROL (16) (17)..........................................................................................................................................34INTERCHANNEL REGULATION (19)...........................................................................................................................................35AMPLIFIER PEAK CURRENT LIMITER (20).................................................................................................................................35AMPLIFIER INTEGRATE CURRENT LIMITER (21)........................................................................................................................35AMPLIFIER PEAK VOLTAGE LIMITER (22).................................................................................................................................35AMPLIFIER SHORT CIRCUIT DETECTOR (24) .............................................................................................................................35MENU DESCRIPTION .......................................................................................................................................................36CHANGING CABINET FAMILY................................................................................................................................................36ADJUSTING VOLUME .............................................................................................................................................................37ADJUSTING DELAY.................................................................................................................................................................38PAGE 7 OF 80